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(No Model.) 2 Sheets-Sheet l C. RIGHTMAN-N.

WBIGHING SCALE. No. 312,583. Patented Feb. 17, 1885..

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(No Model.)

0. yRICHTMANNI WEIGHING SCALE.

Patented Feb. 17, l1885.

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WITNBSSES: 2%.' @y/ UNITED STATES PATENT @erica ASSIGNMENTS, TO RICHARDVATSON, OF NEW. YORK, N. Y.

WEIGHING-SCALE.

SPECIFICATION forming part of Letters Patent No. 312,583, datedFebruary` 17, 1885.

Application filed April 11,]SS-l. (No model.)

, The weight, sliding on the beam, is provided With a projecting tongueand spring-lip that takes into the depressed middle portions of thegraduat-ions ofthe scale-plate. The scale pan is suspended onknife-edges ot' the beam by a U-shaped link provided with a stop, toprevent the detaching ot' the pan. rlhe pan is provided with an elasticcushion at the under side and with a central depression or cup for thereception of the adj Listing-shot, which is retained by a covering-platesecu red by bent ends over the edges of the pan.

In the accompanying' drawings, Figure l. represents a side elevation,and Fig. 2 a plan, of my improved weighing-scale. Fig. 2 is a detailside view ot' the fulcrumed front piece of the scalebeam. Fig. 3 is anend elevation, partly in section, ot' my improved weighingscale. Figs. 4and 5 are respectively a vertical transverse section and a verticallongitudinal section of the sliding weight on lines x x and y y, Fig. 2;and Fig. (3 is a detail seetion of the suspension-link of the scale-pan.

Similar letters of reference indicate corresponding parts.

A in the drawings represents the supporting post or standard oi' myimproved weighingscale, the base of which is provided with aforward-extending heel, a, by which the tilting of the scale isprevented. The post A is provided with a horizontal bracket, B, thatextends in opposite direction from the post A, and is provided at oneend with a `forked vertical support, B, for the knife-edged fulera ofthe scalebeam C, and at the opposite end with a vertical guide staple orloop, B2, for the rear end of the scale-beam C. The scalebeain G is madeof a hollow main piece of these parts is obtained. Ainserted andsoldered into the rear end ol' the Ushaped cross-section, which is bentup or drawn out ot' suitable metal. On the outwardly-bent vtlanges ofthe U-'shapcd main piece is supported a graduated scale-plate, C', whichis soldered, riveted, or otherwise secured to the U-shaped beam C. Theends d d ot the scale-beam t) are made of solid metal, the fulcrumedfront piece, d, being provided with a shoulder, d?, at the upper part,against which abuts the end ot' the scale-plate, and with a secondshoulder, d, at the lower part,

against which abuts the end ot` the hollow `main piece of thescale-bean1,as shown clearly in Figs. l and 2, As the end ot' thescaleplate C extends over the front piece, d, and beyond the point ofconnection ot' the beam with the same, a more rigid connection ol' Therear end, d, is

beam C.

The advantage of the hollow scale-beam C, having a scale-plate, C, atthe top, is that thereby the weight ol' the scaleapan and ot the slidingconnterpoise can be considerably decreased; and, secondly, that by thearrangement ot' the scale at the top ot' the beam the weight of thearticles placed in the scalepan can be read olt' with great facilitywithout stooping down and reading it ot't at the side ofthe scale-beam,as heretofore. A counterweight, C2, of Li shape, slides on the beam C.It is retained thereon by inwardly-preiccting stopscrews Z) b, whichtake below the ilanged edges ot' the beam. A tongue, b, made of aspring-plate that is riveted tothe inside of the weight G2, is retainedby laterally-projecting stops or shoulders bl (shown in Fig. 2) on theweight C2, and provided at a suitable point within the weight C with adownwardly-bent lip, b, that is integral with the body ol the tongue b,and adapted to engage the dcpressed middle portions ot' the graduationsot' the scale-plate C, as shown clearly in Fig. 5. The lip b gives7sniiieiently to clear the depressions ot' the beam when the weight C2 ismoved in either direction over the beam. The iigiires indicating thegraduations are preterably arranged at both sides ot' the middledepressed portions. rIhe weight C2 on being moved over the beam G isreadily retained by the lip if at any one of the graduations of IOO thescaleplate, so as to facilitate thereby the (quick adjustment of theweight in weighing a letter, package, or other article.

To knifesedges of the front piece, d, of the beam (lis hung a scale-pan,D, by asuspensionlink, D2, and bent wire arms D D. The arms D areriveted to the link D2, that rests on the knife-edges at the end of thebeam C, said link being made of cast metal, and provided with anupwardly projecting stop, D3, that is screwed to the middle portion orweb of the suspensioirlink D2. rlhe lower lends of the arms D areattached to perforated ears e of the pan D. The middle portion ofthescalepan D is provided with a depression or cup, j', and the latter witha central downwardlyextending stud, j, cast integral therewith.

rlhe depression or cup f receives the shot by which the proper balancingof the scale-pan and beam is adjusted. The stud f is covered with anexterior sleeve or socket, f2, of rubber or other elastic material,which acts as a cushion when thesca-le-pan strikes the table or othersupport.

To retain the shot in the cup f, a sheetmetal top plate, Dt, is extendedover the upper surfacevof the pan D, between the end flanges of thesame, and attached by its bent edges thereto.

The advantages of my improved weighingscale are, first, that by thelight construction of the scale-beam the weight ofthe parts and theexpense are decreased; second, that the weight ofthe letters andpackages placed in the scale pan can be quickly and economically readoit' on the top scale-plate of the beam; and, third, that by the rubbercushion of the scale-pan the oscillations of the scale-beam are madeshorter, so that the proper balance of the countcrpoise on the beam andof the articles placed is obtained in a quicker manner.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. In a weighing-scale, a scale beam composed of ahollow main piece of U-shaped cross-section and of a scale plate securedto the top of the same, substantially as set forth.

2. A scale-beam composed of a hollow U- shaped main piece, a scale-platesecured to the top of the same, and end'pieccs secured to the ends ofthe beam, substantially as described.

3. The combination of a hollow U-shaped main piece, C, top scale-plate,C', rear piece, cl, and front end piece, d, having a top shoulder, d2,and a bottom shoulder, d, substantially as set forth.

4. The combination of a fulcrumed scalebeam made of a hollow U-shapedmain piece and of a scale-plate secured to the top of the same, withasliding weight, C2, havinginwardly-projecting stops b b and anindextongue, Zi", substantially as specified.

5. rlhe combination of a i'ulcrumed scalebeam composed oi' a hollowU-shaped main piece and of a graduated scaleplate, the graduationsofsaid scale-plate having depressed middle portions,with a slidingweight, G2, having stops b I) an d an index tongue, b, with adownwardly-projecting lip, b, that takes into the depressions of Jthescale-plate, substan tially as set forth.

6. lllhe combination,with a scale-beam having a scale-plate at the top,of a sliding weight, C, having guide-stops bb and an index-tongue. b',said index-tongue having laterally-projecting end shoulders, b, and abent lip, b, substantially as specified.

7. The combination of the fulcrumed scalebeam C, having knife-edges atits front end, with a suspensioirlink, D, a scale-pan, D, sccuredthereto by arms D`-,and a stop, D,wherc by the detaching of thesuspension-link from the beam is prevented, substantially as set forth.

8. A scale-pan having a central depression or cup, f, adownwardlyextending buttonstud,f, and an elastic coveringsoeket,]'2,that acts as a cushion for the pan, substantially as set forth.

ln testimony that l claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

CHARLES RlCHTMANN.

d'itnessesz limi. Gonrnr, SIDNEY MANN.

